|
|
PITFALLS IN INTERPRETATION OF SUBBOTTOM PROFILE DATA |
WANG Fang-qi, LV Jing-fu, SHEN Hong, DONG Li-feng, SONG Yu-peng |
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
|
|
Abstract The subbottom profiler is one of the most widely used geophysical instruments for marine surveying and marine geological research.Although its vertical resolution becomes more and more high,there are some pitfalls in interpretation of the actual acoustic profile data.In this paper,based on the working principle of the subbottom profiler,the authors analyzed four factors causing the interpretation pitfalls.First,the understanding pitfall caused by the difference between acoustic layers and geological layers;Second,the shallow stratigraphic distortion caused by the horizontally separately placed transducer and hydrophone;Third,the spatial deformation of the acoustic interfaces in the data profiles reflected from special stratigraphic interfaces;The last,the layer thickness distortion caused by the change of the speed of acoustic wave propagation in marine sediments.The method concerning the elimination of these pitfalls during processing and interpreting the subbottom profile data is also discussed.
|
Received: 21 January 2013
Published: 10 December 2013
|
|
|
|
|
[1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
[2] |
SHI Lei, GUAN Yao, FENG Jin, GAO Hui, QIU Xin-Wei, QUE Xiao-Ming. Multi-level division method of flow units for accurate permeability assessment of glutenite reservoirs:A case study of reservoir W53 of Paleogene Wenchang Formation in Lufeng oilfield[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 78-86. |
|
|
|
|